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  1. import re
  2.  
  3. test1 = 'AB_x-y-z_XX1234567890_84481.xml'
  4. result = re.search('[^_]+_[^_]+\.xml$', test1, re.I)
  5. if result:
  6. print(result.group())
  7.  
Success #stdin #stdout 0.01s 27760KB
stdin
Standard input is empty
stdout
XX1234567890_84481.xml